The US topped the medal table as the women’s 4x100m medley relay team set a new world record on the final day of competition in Singapore

Summer McIntosh captured her fourth gold medal at the world swimming championships by winning the 400-meter individual medley on Sunday in Singapore.

McIntosh blitzed the field in the 400 IM with a time of 4:25.78, the world record holder coming home more than seven seconds ahead of joint silver medallists Jenna Forrester of Australia and Japan's Mio Narita. China's 12-year-old prodigy Yu Zidi finished just off the podium again having also come fourth in the 200 IM and 200 butterfly.